Washer for mine roof bolt



FIG. 1 is a perspective top and front view of the washer for mine roofbolt showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof; and,

FIG. 5 is an underside view thereof.

The ornamental design for a washer for a mine roof bolt, as shown anddescribed.